The partial skeleton of this small, carnivore dinosaur was found in
Argentina, on a river bank near the Argentine National University's Museum
of Natural Science. Alvarezsaurus, a dinosaur from South America was quiet
different from its Northern relatives. This difference gave rise to a
new family of theropods, Alvarezsauridae, just to accommodate this new
specimen.

This animal was built for speed, with its light wait body, slender legs
and long feet. Whether the speed was used for escaping from large predators
or for chasing down smaller pray, we cannot tell. No forelimbs have yet
been found, but a shoulder blade suggests that its arms and hands were
not used for walking, but for catching and holding its pray. Its tail
was very long and slender, making for more than half of this dinosaur's
total length.